EP 1994255 B1 20180613 - BOREHOLE SEISMIC PULSE GENERATION USING RAPID-OPENING VALVE
Title (en)
BOREHOLE SEISMIC PULSE GENERATION USING RAPID-OPENING VALVE
Title (de)
SEISMISCHE BOHRLOCHIMPULSERZEUGUNG UNTER VERWENDUNG EINES SCHNELL ÖFFNENDEN VENTILS
Title (fr)
GENERATION D'IMPULSIONS SISMIQUES DANS UN TROU DE SONDE A L'AIDE D'UNE VANNE A OUVERTURE RAPIDE
Publication
Application
Priority
- US 2006036170 W 20060918
- GB 0604295 A 20060303
- GB 0518945 A 20050916
Abstract (en)
[origin: WO2007100352A1] During a surge-pulsing operation in a borehole (e.g an oil-well undergoing remediation) liquid is stored under pressure upstream of a valve, and then released through the valve suddenly enough to create a seismic wave, which propagates into the formation around the borehole, and assists the surge-pulsing to improve the conductivity and liquid- injectability of the formation. The downhole valve achieves the rapid-opening requirement by virtue of its geometrical layout, as dictated by the strictures of the downhole environment.
IPC 8 full level
E21B 43/00 (2006.01); E21B 28/00 (2006.01); G01V 1/04 (2006.01); G01V 1/133 (2006.01)
CPC (source: EP US)
E21B 28/00 (2013.01 - EP US); E21B 43/003 (2013.01 - EP US); G01V 1/133 (2013.01 - EP US)
Citation (examination)
US 4411316 A 19831025 - CARMODY MICHAEL A [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2007100352 A1 20070907; AU 2006339418 A1 20070907; AU 2006339418 B2 20110707; BR PI0617008 A2 20110705; CA 2621855 A1 20070907; CA 2621855 C 20150127; EP 1994255 A1 20081126; EP 1994255 A4 20150408; EP 1994255 B1 20180613; US 2008302528 A1 20081211; US 8061421 B2 20111122
DOCDB simple family (application)
US 2006036170 W 20060918; AU 2006339418 A 20060918; BR PI0617008 A 20060918; CA 2621855 A 20060918; EP 06824978 A 20060918; US 6651606 A 20060918